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| International Standard Category: Copper and copper alloys |
GB/T 33948.2-2017 Method for chemical analysis of copper-steel composite metal. Part 2: Determination of zinc content. Na2EDTA titration method
铜-钢复合金属化学分析方法 第2部分：锌含量的测定 Na2EDTA滴定法 ;
| Category No.: | 77.120.30 | Valid Status: | valid |
| Issued Organization: | MOHURD and AQSIQ | Issued Date: | 2017-07-12 |
| Implemented Date: | 2018-2-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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